Zenith Rainbow Chronograph El Primero

Zenith Rainbow Chronograph with box and instruction manual in ultra clean condition. This Zenith Rainbow Chronograph uses the famed El Primero automatic Chronograph movement.
Most watch aficionados will already now the famed reputation of the El Primero chronograph movement. It was designed and introduced in 1969 as the worlds first automatic chronograph movement. Rolex subsequently chose the El Primero for use in their iconic Rolex Daytona Chronograph. Rolex introduced an automatic version of the Daytona with a modified Zenith El Primero movement. One of the modifications made to the Rolex version was to reduce the beat of the movement. The El Primero’s highly accurate 36,000 beats per hour to a more common 28,800. Many speculate that this was done for commonality of service at its centres around the world.
The watch is from a Zentih collector that scarcely wears his watches which is why this watch is in such good condition.
The dial is a wonderful 2 tone white/gray pattern and features an engraved steel bezel. The case carries a model number 01/02 460 400.
The watch is supplied on the original Zenith heavy stainless steel bracelet with signed double deployment clasp.
My watchmaker has reviewed this Zentih Rainbow Chronograph and commented that it is mechanically like new.
The watch measures 40 mm across excluding the crown and 44 mm when the signed Zenith crown is included.